a 12 gauge remington shotgun was also used. the fourth gun, another .40 caliber glock, was recovered in holmes' car. evidence teams are still processing the crime scene but with 71 victims hit by gunfire law enforcement officials suspect the gunman fired at least 100 rounds, maybe more. police say holmes meticulously planned the assault. he apparently surveil it had theater and pre-staged his car and weapons near an access door. outside that door today, police recovered some of the body armor which the gunman wore during the assault. holmes has no criminal record and police say so far they've establish nod motive for the shootings. a search of social networking sites has turned up no significant clues. now, sources tell us at first holmes was cooperative with police, but since then he's clammed up and has gotten a lawyer. so far he's offered no explanation whatsoever, scott, for the shooting. >> pelley: bob, thanks. james eagan homes has roots in southern california so we sent bill whit dore san diego to find out more about him